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do not proceed with output generation if no changed funcs

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If there are no changed functions, print notice and exit.

Signed-off-by: Seth Jennings <sjenning@redhat.com>
This commit is contained in:
Seth Jennings 2014-03-24 10:46:52 -05:00
parent 8c487ad6a8
commit eb915722cd
1 changed files with 9 additions and 3 deletions
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12
kpatch-build/create-diff-object.c
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@ -829,16 +829,17 @@ out:
return;
}
void kpatch_include_changed_functions(struct kpatch_elf *kelf)
int kpatch_include_changed_functions(struct kpatch_elf *kelf)
{
struct symbol *sym;
int i;
int i, changed_nr = 0;
log_debug("\n=== Inclusion Tree ===\n");
for_each_symbol(i, sym, &kelf->symbols) {
if (sym->status == CHANGED &&
sym->type == STT_FUNC) {
changed_nr++;
log_normal("changed function: %s\n", sym->name);
if (!sym->include)
kpatch_include_symbol(sym, 0);
@ -847,6 +848,8 @@ void kpatch_include_changed_functions(struct kpatch_elf *kelf)
if (sym->type == STT_FILE)
sym->include = 1;
}
return changed_nr;
}
int kpatch_copy_symbols(int startndx, struct kpatch_elf *src,
@ -1363,7 +1366,10 @@ int main(int argc, char *argv[])
*/
kpatch_replace_sections_syms(kelf_patched);
kpatch_include_changed_functions(kelf_patched);
if (!kpatch_include_changed_functions(kelf_patched)) {
log_normal("no changed functions were found\n");
return 3; /* 1 is ERROR, 2 is DIFF_FATAL */
}
kpatch_dump_kelf(kelf_patched);
/* Generate the output elf */